The Final Warning (Maximum Ride #4)

While on a mission to Antarctica to save the world from global warming, fourteen-year-old Maximum Ride and the other members of the Flock are pursued by their creator, the Uber Director, who wants to auction them off to the highest bidder.

Long Synopsis:

In this breathtaking new story from the astonishing imagination of James Patterson, a girl has to save herself from an army assembled just to capture her-and maybe save the planet while she's at it.
Maximum Ride is a perfectly normal teenager who just happens to be able to fly, the result of an out-of-control genetic experiment. Max and the other members of the flock-five kids who share her remarkable ability-have been asked to aid a group of environmental scientists studying the effects of global warming. The expedition seems like a perfect combination of adventure, activism-and escape from the government forces that are watching the flock all the time.
But even in Antarctica, enduring the harshest weather on our planet, Maximum Ride is an irresistible target in constant danger. For whoever controls her could also control the world....
Maximum Ride is James Patterson's greatest character, a heroine who manages to be human and fearless at once. The Final Warning is an unrelenting new adventure from the writer Time magazine has called "the man who can't miss."